title: Pulsatile driving of the helical flow pump.
abstract: The helical flow pump (HFP) is newly developed blood pomp for total artificial heart (TAH). HFP can work with lower rotational speed than axial and centrifugal blood pump. It can be seen reasonable feature to generate pulsatile flow because high response performance can be realized. In this article, pulsatility of HFP was evaluated using mock circulation loop. Pulsatile flow was generated by modulating the rotational speed in various amplitude and heart rate. In the experiment, relationship between Pump flow, pump head, rotational speed amplitude, heart rate and power consumption is evaluated. As the result, complete pulsatile flow with mean flow rate of 5 L/min and mean pressure head of 100 mmHg can be obtained at ± 500 rpm with mean rotational speed of 1378 to 1398 rpm in hart rate from 60 to 120. Flow profiles which are non-pulsatile, quasi-pulsatile or complete flow can be adjusted arbitrarily. Therefore, HFP has excellent pulsatility and control flexibility of flow profile.
authors.forename: Kohei
authors.initials: K
authors.lastname: Ishii
authors.forename: Kyohei
authors.initials: K
authors.lastname: Hosoda
authors.forename: Takashi
authors.initials: T
authors.lastname: Isoyama
authors.forename: Itsuro
authors.initials: I
authors.lastname: Saito
authors.forename: Koki
authors.initials: K
authors.lastname: Ariyoshi
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Inoue
authors.forename: Masami
authors.initials: M
authors.lastname: Sato
authors.forename: Sintaro
authors.initials: S
authors.lastname: Hara
authors.forename: Xinyang
authors.initials: X
authors.lastname: Lee
authors.forename: Sheng-Yuan
authors.initials: SY
authors.lastname: Wu
authors.forename: Toshiya
authors.initials: T
authors.lastname: Ono
authors.forename: Hidemoto
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Kou
authors.initials: K
authors.lastname: Imachi
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Abe
mesh_terms: D006339:Heart Rate / Q000502:physiology; D006353:Heart-Assist Devices; D018056:Hemorheology; D057446:Hydrodynamics; D011474:Prosthesis Design; D011673:Pulsatile Flow / Q000502:physiology*; D012399:Rotation